截面

We use multi-source points, compute the initial section with geodesic distance and determine the key point while the section moves front.

本文提出一种从散乱点集上自动抽取骨架的算法，它使用多个起始点，根据测地线距离计算初始截面，此后在截面推进过程中自动判别关节点。

Based on the grillage simulation, the curved girder is analyzed in this paper. Through the comparison between the same height web plate and the different height web plate, the applied domain of each kind of cross section is given.

采用梁格法对曲线箱梁桥的受力特点进行分析和阐述，并对等高腹板和不等高腹板两种截面形式的优劣进行比较，得出了两种截面形式各自的适用范围。

The equations for the helicoid and cross section of a ballscrew are worked out and a numerical integral method for the computation of the moment of inertia of the cross section is proposed.

建立了滚珠丝杠的螺旋面方程及横截面方程，提出一种精确计算滚珠丝杠横截面惯性矩的数值积分法，计算结果表明，传统的简化方法将造成20％以上的计算误差。

Many other discussions on the sections of η-ξ spacetime can be similarlycarried out on the cross sections of this hyperboloid.

在η-ξ时空的截面上的许多讨论可以类似地在这个超旋转双曲面的截面上进行。

For the purpose of this requirement, a wire crossing the imaginary plane more than once is treated as separate wires and the cross-sectional area of a wire having a non-circular cross-section shall be taken as the cross-sectional area of a circular wire having a diameter equal to the maximum width of the wire having the non-circular cross-section.

为了达 到这一要求，电线不仅一次通过这个假想面。计算横截面积时，散线或非圆截面的电线的横截面积等同于圆线的最大直径横截面积。

In this article, the stress inside a quantum-wire structure is studied. Based on the derived expression of the stress inside a quantum-wire structure with arbitrarily shaped cross section, the analytical solution of the stress inside a trigonal quantum-wire structure in an infinite matrix is obtained.

研究了晶格失配和热失配在半导体量子线结构中所产生的弹性场，在分析圆柱形量子线结构弹性场的基础上，推导得到了任意截面形状量子线结构解的一般形式，并给出无限大基体内横截面为三角形量子线结构的解析结果。

The relationship between the G(superscript *) integral of release rate of non-spontaneous extending energy and stress-intensity factors was given. The relationships among G(superscript *) integral, load, geometry parameters and machine function parameters were provided. Furthermore, the stress intensity factor of center cracks in sectional I beam was obtained.

给出了工字型截面梁裂纹非自发扩展能量释放率G积分与应力强度因子的关系，同时也给出了G积分与载荷、几何参量以及机械性能参数的关系，进而得到工字型截面梁腹板中心裂纹的应力强度因子。

Relating to or based upon a section (i.e. as if cut through by an intersecting plane).

关于截面的或以截面为基础的（好像被一个相交平面穿过）。

For its many merits, twin gridded ionization chamber is used in the studies of and reactions.

由于屏栅电离室的诸多特点，被用于快中子核反应截面、能谱及双微分截面的测量。

The effects of different parameters and cross-sections on axial velocity, the distribution of secondary flow, temperature field, turbulent kinetic energy, wall friction coefficient and wall Nusselt number are analyzed in detail.

详细分析了充分发展的和发展段的湍流管道内，不同截面形状和几何参数对轴向速度分布，截面二次流结构，湍动能，曲线管道摩擦比，温度分布和曲线管道Nusselt系数比等管道流动和传热特性的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷